convinced, as i was, that they can outrace their own fatigue. i was in a real twilight zone the entire time. and it was scary. for "nightline," ron claiborne in massachusetts. >> thank you, ron. sleep well tonight. coming up next, we'll meet with a trio of ghost enthusiasts, tracking down spirits around the globe and we go along for a paranormal encounter of our own. our holi. aww, not the mall. well, i'll do the shopping... if you do the shipping. shipping's a hassle. i'll go to the mall. hey. hi. y'know, holiday shipping's easy with priority mail flat rate boxes from the postal service. if it fits, it ships anywhere in the country for a low flat rate. yeah, i know. oh, you're good. [ laughing ] good luck! [ male announcer ] priority mail flat rate boxes. online pricing starts at $5.15. only from the postal service. i put away money.